6388878106000 has 80 divisors (see below), whose sum is σ = 16636638655728. Its totient is φ = 2358970368000.

The previous prime is 6388878105901. The next prime is 6388878106001. The reversal of 6388878106000 is 6018788836.

It can be written as a sum of positive squares in 8 ways, for example, as 2918958582016 + 3469919523984 = 1708496^2 + 1862772^2 .

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×6388878106000² (a number of 26 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6388878106001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 122837041 + ... + 122889040.

Almost surely, 2^{6388878106000} is an apocalyptic number.

It is an amenable number.

6388878106000 is an abundant number, since it is smaller than the sum of its proper divisors (10247760549728).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6388878106000 is a wasteful number, since it uses less digits than its factorization.

6388878106000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245726117 (or 245726101 counting only the distinct ones).

The product of its (nonzero) digits is 3096576, while the sum is 55.

The spelling of 6388878106000 in words is "six trillion, three hundred eighty-eight billion, eight hundred seventy-eight million, one hundred six thousand".